/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassEntityManager.h
Fetches the archetype for a given Entity. Note that it's callers responsibility the given Entity handle is valid. If you can't ensure that call GetArchetypeForEntity.
[FMassArchetypeHandle](API\Plugins\MassEntity\FMassArchetypeHandle) GetArchetypeForEntityUnsafe ( [FMassEntityHandle](API\Plugins\MassEntity\FMassEntityHandle) Entity ) const